TM-9-6920-430-14
COOLANT RECHARGING UNIT, TRAINING GUIDED MISSILE SYSTEM M80 AND CHARGER, BATTERY PP-7309/T
TECHNICAL MANUAL; OPERATOR’S AND ORGANIZATIONAL DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL
AUGUST 1980
TM-9-6920-430-14 - Page 113 of 180
TM 9-6920-430-14
Section
V.
TROUBLESHOOTING
3-10. GENERAL
a. The troubleshooting procedures contained in this section will assist you in isolating equip-
ment failure to the replaceable component level.
Tables 3-3 and 3-4 provide troubleshooting
procedures for the gas pumping unit and battery charger respective}’. Refer to Section VI for parts
replacement procedures when performing corrective maintenance on either unit. Special tools or test
equipment will not be required to remove and replace these components.
b. The tables list the common malfunctions which you may find during operation of the GPU
or battery charger. You should perform the tests inspection and corrective action in the order listed.
Steps marked with an asterisk (*) contain repair instructions that are to be performed by
Moving Target Simulator personnel only.
c. This manual cannot list all malfunctions that may occur; if a malfunction is not listed in
the symptom index or is not corrected by the listed corrective action, notify your supervisor.
d. Symptoms Index
Troubleshooting procedure
Gas pumping unit
(item no.)
Fails to start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pressure gage indicates incorrect pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Inlet/outlet gage readings differ.
.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
High squeal heard when pump is operating . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Compressor motor
operates only
when ON switch depressed . . . . . . . . . . 5
Running time motor does not operate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CPU does not stop when pressure gages indicate 6000 psig . . . . . . . . . . . . . 7
Battery Charger
Power lamp does not illuminate.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
All charge lamps do not illuminate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Test lamp does not illuminate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Test lamp does not illuminate imposition 5 . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Heater circuit networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Change 1
3-53
Back to Top
